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When a fan tries to explain something to a pro athlete, coach, GM or entertainer about the pro's craft. Takeoff of mansplaining.
(fan) "If you open your batting stance, you'll see the ball better."
(pro athlete) "Quit fansplaining! I'm the pro athlete, not you!"
by The Runs June 10, 2017
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A spiel given by a comic book/film franchise know it all/fan boy about something in the movie condescending over others who are understanding the plot at face value.
"You don't understand George, Jean Grey eventually becomes the most powerful X Men so that's why her eyes turn red."
"Stop fansplaining , Garry."
by CrankyBob June 06, 2018
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